1. Naively or unreasonably optimistic
   "I found the article regarding earnings growth slightly Panglossian" 
2. Of or relating to the view that this is the best of all possible worlds

Encyclopedia: Panglossian

• easternmost
• Eastertide
• easting
• Eastman
• eastmost
• eastside
• eastward
• eastwards
• easy
• easy chair
• easy lay
• easy listening
• easy mark
• easy money
• easy street
• easy-peasy
• easygoing
• easygoingness
• eat
• eat at
• eat away
• eat humble pie
• eat in
• eat into
• eat on